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100 _a20171207a2017 k y0engy50 ba
101 0 _aeng
102 _aNL
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aDeep-penetrating photodynamic therapy with KillerRed mediated by upconversion nanoparticles
_fLiuen Liang [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 45 tit.]
330 _aThe fluorescent protein KillerRed, a new type of biological photosensitizer, is considered as a promising substitute for current synthetic photosensitizes used in photodynamic therapy (PDT). However, broad application of this photosensitiser in treating deep-seated lesions is challenging due to the limited tissue penetration of the excitation light with the wavelength falling in the visible spectral range. To overcome this challenge, we employ upconversion nanoparticles (UCNPs) that are able to convert deep-penetrating near infrared (NIR) light to green light to excite KillerRed locally, followed by the generation of reactive oxygen species (ROS) to kill tumour cells under centimetre-thick tissue. The photosensitizing bio-nanohybrids, KillerRed-UCNPs, are fabricated through covalent conjugation of KillerRed and UCNPs. The resulting KillerRed-UCNPs exhibit excellent colloidal stability in biological buffers and low cytotoxicity in the dark. Cross-comparison between the conventional KillerRed and UCNP-mediated KillerRed PDT demonstrated superiority of KillerRed-UCNPs photosensitizing by NIR irradiation, manifested by the fact that ?70% PDT efficacy was achieved at 1-cm tissue depth, whereas that of the conventional KillerRed dropped to ~7%.
461 _tActa Biomaterialia
463 _tVol. 51
_v[P. 461-470]
_d2017
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aфотодинамическая терапия
610 1 _aфотосенсибилизаторы
610 1 _aбелок
610 1 _aнаночастицы
610 1 _aпередача энергии
701 0 _aLiuen Liang
701 0 _aYiqing Lu
701 0 _aRun Zhang
701 1 _aCare
_bA.
_gAndrew
701 1 _aOrtega
_bT. A.
_gTiago Almeida
701 1 _aDeev
_bS. M.
_cbiologist
_cthe expert of Tomsk Polytechnic University, doctor of biological Sciences
_gSergey Mikhaylovich
_2stltpush
_3(RuTPU)RU\TPU\pers\39299
701 1 _aQian
_bYi.
701 1 _aZvyagin
_bA. V.
_gAndrey V.
712 0 2 _aНациональный исследовательский Томский политехнический университет (ТПУ)
_bФизико-технический институт (ФТИ)
_bЛаборатория радиационного контроля № 31 (Лаборатория РК № 31)
_h6472
_2stltpush
_3(RuTPU)RU\TPU\col\19161
801 2 _aRU
_b63413507
_c20171220
_gRCR
856 4 _uhttps://doi.org/10.1016/j.actbio.2017.01.004
942 _cCF